bugFree UCS Outline Fonts - Bugs: bug #48565, Ligatures with U+FBBF ARABIC...

 
 

bug #48565: Ligatures with U+FBBF ARABIC SYMBOL RING

Submitted by:  None
Submitted on:  Tue 19 Jul 2016 09:04:10 PM UTC  
 
Category: character rangeSeverity: 3 - Normal
Item Group: character substitution issueStatus: Fix posted
Privacy: PublicAssigned to: Steve White <Stevan_White>
Open/Closed: OpenRelease: 2012-05-03

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Sat 23 Jul 2016 09:12:44 AM UTC, comment #4:

That now-unneeded table should be removed in the latest commits.

Steve White <Stevan_White>
Project AdministratorIn charge of this item.
Wed 20 Jul 2016 08:19:31 PM UTC, comment #3:

FreeSerif is fixed now, but FreeMono.sfd still contains lines like:

Ligature2: "'liga' std. ligatures in Arabic-ring-Pashto" kafarabic ringarabic

Anonymous
Wed 20 Jul 2016 06:51:00 PM UTC, comment #2:

In SVN. Have a look.

(file #37962, file #37963)

Steve White <Stevan_White>
Project AdministratorIn charge of this item.
Wed 20 Jul 2016 02:47:12 PM UTC, comment #1:

You're mostly right, Anonymous...

I don't have any recollection of doing this, but plainly I did, and it's plain what I intended. The intent was to accommodate the positional forms of Pashto letters that have rings and extra dots by decomposing the basic glyph, and then recomposing with ligatures.

But it wasn't working at all. It looks as if I never tested it. And yes, to use one of the pedagogical symbols for this purpose was just wrong.

I'm on it.

Steve White <Stevan_White>
Project AdministratorIn charge of this item.
Tue 19 Jul 2016 09:04:10 PM UTC, original submission:

In FreeSerif and FreeMono, U+FBBF ARABIC SYMBOL RING is ligated with a preceding kaf, teh, reh, waw, dal, or noon. This behavior is controlled by the "'liga' std. ligatures in Arabic-ring-Pashto" table and is clearly intentional, but it is wrong. According to The Unicode Standard version 9.0, chapter 9, page 390, “The range of characters U+FBB2..U+FBC1 provides a set of symbols for this purpose. These are ordinary, spacing symbols with right-to-left directionality. They are not combining marks, and are not intended for the construction of new Arabic letters by use in combining character sequences. The Arabic pedagogical symbols do not partake of any Arabic shaping behavior. Their Joining_Type is Non_Joining, so if used in juxtaposition with an Arabic letter skeleton, they will break the cursive connection and render after the letter, instead of above or below it.”

Anonymous

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

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Attached Files
file #37963:  Pashto_letters.pdf added by Stevan_White (242KiB - image/pdf)

 

Depends on the following items: None found

Items that depend on this one: None found

 

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    Follow 5 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Wed 20 Jul 2016 06:51:00 PM UTCStevan_WhiteAttached File-=>Added Pashto_letters.html, #37962
      Attached File-=>Added Pashto_letters.pdf, #37963
      StatusConfirmed=>Fix posted
    Wed 20 Jul 2016 02:47:12 PM UTCStevan_WhiteStatusNone=>Confirmed
      Assigned toNone=>Stevan_White

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